The bestselling third title in the Kane Chronicles series by Percy Jackson creator Rick Riordan - now in stunning graphic novel form!

CARTER AND SADIE KANE descendants of the magical House of Life are in pretty big trouble.

Despite their bravest efforts Apophis the giant snake of Chaos is still threatening to plunge the world into eternal darkness. Now the Kanes must do something no magician has ever managed - defeat Apophis himself. No pressure there then.

Battling against the forces of Chaos their only hope is an ancient spell - but the magic has been lost for a millennia. Will they find the serpent's shadow or will they be led to their deaths in the depths of the Underworld?